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Animalia
20
Biodiversity
20
Cephalopoda
Mollusca
20
Oncocerida
Phthanoncoceratidae
20
Taxonomy
20
Valhalloceras
19
Rioceratidae
13
Tetrabranchia
13
Olenidslettoceras
12
Bassleroceratidae
10
Ellesmerocerida
10
Lawrenceoceras
9
Cyclostomiceratidae
4
Cyclostomiceras
3
Nyfrieslandoceras
3
Valhalloceras floweri
2
Bactroceratidae
1
Baltoceratidae
1
Cyptendoceratidae
1
Dissidocerida
1
Ellesmeroceratidae
1
Endocerida
1
Estonioceratidae
1
Orthocerida
1
Proterocameroceratidae
1
Protocycloceratidae
1
Riocerida
1
Tarphyceratidae
1
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